seagrave



(No Model.)

J. D. SEAGRAVE & P. W. LEWIS.

- CONSTRUCTION 01? WOODEN PIPES.

No. 256,060. Patented Apr. 4.1882.

UNITED STATES PATENT OFFICE.

JOHN D. SEAGRAVE AND FRANK LEWIS, OF \VORCESTER, MASS.

CONSTRUCTION OF WOODEN PIPES.

SPECIFICATION forming part of Letters Patent No. 256,060, dated April 4, 1882.

Application filed August 10, 1881. (No model.)

To all whom it may concern Be it known that we, JOHN D. SEAGRAVE and FRANK W. LEWIS, of the city and county of \Vorcester, and State of Massachusetts, have invented new and useful Improvements in the Construction of WVooden Pipes, ofwhich the following is a specification.

Our invention relates to the construction of wooden pipe; and it consists in forming the same of segmental sections, each provided with overhanging longitudinal ribs adapted to engage with similar ribs on the adjoining section or sections and thus to hold the parts firmly together, as hereinafter explained.

In the accompanyingdrawings, Figure 1 represents an end view, and Fig. 2 a perspective view, of the improved pipe.

WVooden pipes have hitherto generally been made of segmental sections tongued and grooved in the same man ner as flooringboards; but such construction has involved the necessity of special means for securing the parts or sections together and retaining them permanently in place. To overcome the necessity of such fastening or binding devices we construct our pipe as shown in the drawings, in which A represents the pipe entire, composed in the present instance of two sections, B C, though it is apparent that a greater number of sections may be used, if desired. The sections 13 O are arc-shaped in cross-section, and each is formed or furnished on the edges or faces which are brought into contact with the edges or faces of adjoining sections with overhanging ribs cl and m, the overhang being formed by cutting grooves n and e in the sides of the ribs (1 and m, respectively, as shown.

In the drawings, the groove is represented as rectangular; but it is obvious that its form is immaterial, provided the ribs be made wider at their outer face than at a point back of said face, or, in other words, provided the ribs be made to dverhaiw.

The ribs being constructed in the manner explained, it will be seen that the sections may be put together by placing them end to end and sliding them one upon the other, the ribs interlocking in the manner shown, and thereby guiding the parts to place and holding them firmly in position.

It will also be seen that while no other means are employed for securing or binding together the segmental sections they can only be separated by moving them longitudinally, one in relation to the other or others.

\Ve are aware that boxes have been provided with sliding covers, the box and cover being respectively provided with interlocking longitudinal ribs; but we are not aware that any one has ever heretofore constructed a pipe of segmental sections provided with longitudinal interlocking ribs.

The essential feature of our invention, there fore, consists in forming interlocking ribs upon the segmental sections, in contradistiuction to the tongue and groove hitherto employed, which did not interlock, and hence failed to hold the sections together; hence What we claim is 1. The pipe consisting of section B, pro vided with ribs (1 and grooves c, and section 0, provided with ribs m and grooves 42, combined and united as shown.

2. As an article of manufacture, a wooden pipe composed of segmental sections, each provided with longitudinal ribs on each edge, said ribs being interlocked, substantially as set forth.

JOHN D. SEAGRAVE. FRANK V. LEWIS.

Witnesses:

HIRAM THOMPSON, J. G. DREW. 

